source3/lib/fstring.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    fixed string functions
   5
   6    Copyright (C) Igor Vergeichik <iverg@mail.ru> 2001
   7    Copyright (C) Andrew Tridgell 2001
   8    Copyright (C) Simo Sorce 2001
   9    Copyright (C) Martin Pool 2003
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 */
  25
  26 #include "includes.h"
  27
  28 size_t push_ascii_fstring(void *dest, const char *src)
  29 {
  30         return push_ascii(dest, src, sizeof(fstring), STR_TERMINATE);
  31 }
  32
  33 /********************************************************************
  34  Push an nstring (a netbios string)
  35  this function uses convert_string_error() to avoid common debug
  36  warnings where is unable to convert strings to CH_DOS. The target
  37  string is truncated at the first character that cannot be converted
  38  The target is always null terminated.
  39 ********************************************************************/
  40
  41 size_t push_ascii_nstring(void *dest, const char *src)
  42 {
  43         size_t converted_size = 0;
  44         bool ret;
  45
  46         errno = 0;
  47         ret = convert_string_error(CH_UNIX, CH_DOS, src, -1, dest, sizeof(nstring), &converted_size);
  48         if (ret || errno == E2BIG) {
  49                 SCVAL(dest, sizeof(nstring)-1, 0);
  50         } else {
  51                 SCVAL(dest, 0, 0);
  52         }
  53         return ret ? converted_size : (size_t)-1;
  54 }
  55
  56 size_t pull_ascii_fstring(char *dest, const void *src)
  57 {
  58         return pull_ascii(dest, src, sizeof(fstring), -1, STR_TERMINATE);
  59 }
  60
  61 /* When pulling an nstring it can expand into a larger size (dos cp -> utf8). Cope with this. */
  62
  63 size_t pull_ascii_nstring(char *dest, size_t dest_len, const void *src)
  64 {
  65         return pull_ascii(dest, src, dest_len, sizeof(nstring), STR_TERMINATE);
  66 }
  67